From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Andrzej Siewior Subject: [PATCH 11/16] slub: Use correct cpu_slab on dead cpu Date: Wed, 13 Feb 2013 17:12:06 +0100 Message-ID: <1360771932-27150-12-git-send-email-bigeasy@linutronix.de> References: <1360771932-27150-1-git-send-email-bigeasy@linutronix.de> Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Carsten Emde , Christoph Lameter , Sebastian Andrzej Siewior To: Steven Rostedt Return-path: In-Reply-To: <1360771932-27150-1-git-send-email-bigeasy@linutronix.de> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org From: Christoph Lameter Pass a kmem_cache_cpu pointer into unfreeze partials so that a different kmem_cache_cpu structure than the local one can be specified. Reported-by: Thomas Gleixner Signed-off-by: Christoph Lameter [bigeasy@linutronix: remove unused n2] Signed-off-by: Sebastian Andrzej Siewior --- mm/slub.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 78d2756..d9ba33d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1870,11 +1870,15 @@ static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c) } } -/* Unfreeze all the cpu partial slabs */ -static void unfreeze_partials(struct kmem_cache *s) +/* + * Unfreeze all the cpu partial slabs. + * + * This function must be called with interrupt disabled. + */ +static void unfreeze_partials(struct kmem_cache *s, + struct kmem_cache_cpu *c) { struct kmem_cache_node *n = NULL; - struct kmem_cache_cpu *c = this_cpu_ptr(s->cpu_slab); struct page *page, *discard_page = NULL; while ((page = c->partial)) { @@ -1977,7 +1981,7 @@ int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain) * set to the per node partial list. */ local_irq_save(flags); - unfreeze_partials(s); + unfreeze_partials(s, this_cpu_ptr(s->cpu_slab)); local_irq_restore(flags); pobjects = 0; pages = 0; @@ -2015,7 +2019,7 @@ static inline void __flush_cpu_slab(struct kmem_cache *s, int cpu) if (c->page) flush_slab(s, c); - unfreeze_partials(s); + unfreeze_partials(s, c); } } -- 1.7.10.4